“App is damaged and can’t be opened” on macOS
This is the macOS Gatekeeper first-launch check, not a corrupted download.
How to fix it
- 01Open System Settings → Privacy & Security and scroll to “Open anyway” for Modly, then confirm.
- 02Or open Finder, right-click Modly, and choose “Open” from the context menu, then confirm the dialog.
- 03On macOS 15 and newer, repeat the right-click once per version upgrade — each new build is checked separately.